Spring



UNITED sTATEs PATENT oEEioE.

ALFRED N. CLOUGH, 0F sUNNYvALn-GALIEOENIA, AssIeNoE To THREE LEAF Co'J'v MANUFACTURING G0., 0F SUNNYVALE, CALIFORNIA, A CORPORATION QF NEVADA.

SPRING.

To all'whom it may concern.'

Be it known thatI, ALFRED N. GLOUGH, a citizen of the United States, andA resident of Sunnyvale, in theV county of Santa Clara and State of California, have invented certain new and useful Improvements in Springs, of which the following is a specification.

My invention relates to springs for use upon beds, cots and similar structures.

It is the principal object of my invention to provide a spring having supporting elements so constructed and arranged as to give at the point of application or pressure thereto and to conform substantially to the form of the body exerting the pressure, without materially altering` the general level of the rest of the spring. Another object of the invention is to provide a device of the character indicated having supporting elements so connected and arranged that pressure applied to one portion of the spring will exert tension strains upon the rest of the spring in such a manner as to increase its resistance to loads applied thereto. Further objects are to provide a spring that will be light, strong, durable, simple in construction and that can be readily packed in small space.

The drawing is a plan view of a spring embodying my invention.

Referring more particularly to the drawing, l is a frame of any suitable form upon which the spring embodying my invention is mounted. The numeral 2 indicates in each case a suitable supporting wire, cord or cable secured to one end of frame 1 and positioned parallel with the sides of said frame and extending a distance toward the center thereof, the several wires being suitably spaced as shown. At 3 are shown similar wires alined with wires 2 in the center of frame 1 and' connected at each end to the inner end of the adjacent wire 2 by a spring as 4. At 5 are shown shorter wires than provided at 3, placed midway between wires 3 and parallel thereto and attached at each end to a spring 6. The length of each wire in conjunction with springs 6 is such that wires 7 connecting the outer ends of springs 6 with the point of junction of springs 4 and. wire 2 are -angularly positioned with relation to wires 2, 3 and 5.

The several parallel wires 2 are jointed as at 8 and connected at intervals by light Specification of Letters Patent.

Application filed August 18, 1919. Serial 110.318,27.

spacing wires 9 also jointed as at 10. lVires 2 are also connected to each other on a line adjacent springs l by a series of springs 11, and to they sides of frame 1 by wires 12. I prefer also to join the outer ends of the outside springs 4L at their points of junction with wires 2, to the side portions of fram l as indicated at 13.

In a spring construction as described a pressure applied to certain wires 3 as indicated at 14 exerts tensional strains upon the corresponding springs 4 and 6. These strains are transmitted through the several members of the spring to the frame thereof as indicated bv the arrows 15.

' i It will be seen from the above description that a load upon one portion of the spring tends to maintain the normal level of the rest of the spring and add to its sustaining powers as it places the several supporting members thereof under greater tension. This spring also may be packed in small space as any number of required joints may be made in the same and its thickness is determined by the weight of the wire and tension springs used, there being no supporting cables or compression springs required.

While I have herein shown and described the preferred embodiment of my invention, it is understood that changes in form, construction, proportions and arrangement of the several parts, members and features may be made within the scope of the appended claims.

I claim 1. A spring including sustaining means, a plurality of tension members attached thereto and extending longitudinally thereof and having middle sections resiliently mounted therein in alinement therewith, longitudinally disposed tension members arranged between said middle sections and resilient connections between said last mentioned tension members and said first mentioned tension members.

2. A spring including sustaining means, a plurality of tension members attached. thereto and extending longitudinally thereof and having middle sections resiliently mounted therein in alinement therewith, longitudinally disposed tension members arranged between said middle sections and resilient connections between said last mentioned tension members and said first mentioned tension members at the ends thereof adjacent their middle sections.

3. A spring including sustaining means, a plurality of jointed tension members at" tached thereto and extending longitudinally thereof and having middle sections resili-V ently mounted therein in alinement therewith, longitudinally disposed tension members shorter than said niiddle sections arranged intermediate said middle sections, tension members attached to the inner'ends of said first mentioned tension members at their points of junction with their resiliently mounted middle sections, resilient means connecting each end of each of said intermediately arranged members with the two adj acent last described tension members, resilient connections between the adjacent first mentioned tension members, jointed spacing members connecting said iirst mentioned tension members, and tension members connecting the outermost of saidy lirst mentioned tension members to said sustaining means at points in substantial alinement with said last mentioned resilient connections and at points in substantial alinement with the resilient connections of said members with their middle sections. Y

ALFRED N. cLoUGI-r V- 

